Differential questions

[badfish888]

i decided im goin to go with royal purple for the fluid change.
my question is what kind of RTV or Permatex do i need for the gasket?

i know they have drying stuff, stuff that stays tacky........

and if i were to buy a gasket what kind of rear end do i have its a 2012 ram express 4 door 4x4

 

[badfish888]

Bump

 

[Chewy]

I've always used black RTV on diff covers. Gaskets leak!


Sent from my miniaturizer via tap dancing...

 

[BAILEY1]

^^^This. Black RTV!

 

[PCA4208]

Black permatex, and IF you want a gasket it's for a Chrysler 9.25 inch, make sure to use the friction modifier if you have a LSD. Some use it even if the oil says it already has it, just to further quiet things up, but with the RP fluid you don't need it.

 

[smiley]

I also use the black RTF sometimes I use the "Right Stuff" it is even easier. I have never had a leak with this method. Gaskets that are reusable have failed me the one time I tried it.


$miley

 

[03MopaRamman]

The Best stuff I use is the Mopar Gear Sealant (RTV Type Black) . Since RTV alone is prone to leakge IMO, I always make my Own Gaskets using a Mopar Gasket (Yep they exist) as My Jigg Pattern But that is not necessary, you can use the Cover and a black lab marker. A Roll of felpro goes a long way and all you need is a set of gasket hole Punches. My Diff never leaks at the rear, and soon I will try the channeled groove o-ring type gasket offered with the Magnatec set-up!


The Trick is to let the RTV set=up for at least an hour before adding the new Fluid, 2 hours even better!

 

[badfish888]

sounds good, thanks guys. ive also heard you can let the RTV dry to a Tacky feel before you install it? would this realy matter or just let it set up before i ad fluid

 

[Chewy]

Yes, let it skin over slightly and then bolt up the cover.

Clean clean and reclean the mating surfaces too. Brake clean works well.